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Supplementary Cash Flow Information - Summary of Changes in Non-Cash Working Capital (Detail) - CAD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Changes in non-cash working capital items [Abstract] |  |
Accounts receivable | $ (3,023) | $ (1,033)
Sales taxes receivable | (305) | (3,114)
Prepaids and other receivables | (3,086) | (287)
Biological assets | 6,216 | 5,710
Inventory | (11,517) | (8,957)
Accounts payable and other liabilities | 7,479 | 6,697
Holdbacks payable | 7,887 |
Government remittances payable | 1,093 |
Net changes in non-cash working capital | $ 4,744 | $ (984)

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